hey!!!!
answer this!!
full explanation required!!
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hey!!!!
answer this!!
full explanation required!!
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Verified answer
Heya..!!!!let the three terms be (a - d),a (a + d)
case(1)
a - d + a + a + d = 45
=> 3a = 45
=> a = 45/3
=> a = 15---(1)
case (2)
(a - d)² + a² + (a + d)² = 693
=> a ² + d² - 2ad + a² + a² + d² + 2ad = 693
=> 3a² + 2d² = 693
=> 3(15)² + 2d² = 693
=> 675 + 2d² = 693
=> 2d² = 18
=> d² = 18/2 = 9
=> d = +-3
(15 - 3) = 12
a = 15
(15 + 3) = 18
12 , 15 , 18
next term = (18 + d) = (18 + 3) = 21
hence, option (3) is correct